(1/2006-1)(1/2005-1)(1/2004-1)...(1/1000-1)写出过程,讲解!急!~~

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(1/2006-1)(1/2005-1)(1/2004-1)...(1/1000-1)写出过程,讲解!急!~~(1/2006-1)(1/2005-1)(1/2004-1)...(1/1000-1)写出

(1/2006-1)(1/2005-1)(1/2004-1)...(1/1000-1)写出过程,讲解!急!~~
(1/2006-1)(1/2005-1)(1/2004-1)...(1/1000-1)
写出过程,讲解!急!~~

(1/2006-1)(1/2005-1)(1/2004-1)...(1/1000-1)写出过程,讲解!急!~~
=(-2005/2006)(-2004/2005)……(-999/1000)
=-999/2006